package com.yz.xyt.utils;

import org.apache.commons.lang3.time.DateFormatUtils;

import java.lang.management.ManagementFactory;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * 时间工具类
 */
public class DateUtils extends org.apache.commons.lang3.time.DateUtils
{
    public static String YYYY = "yyyy";

    public static String YYYY_MM = "yyyy-MM";

    public static String YYYY_MM_DD = "yyyy-MM-dd";

    public static String YYYYMMDDHHMMSS = "yyyyMMddHHmmss";

    public static String YYYY_MM_DD_HH_MM_SS = "yyyy-MM-dd HH:mm:ss";
    
    private static String[] parsePatterns = {
            "yyyy-MM-dd", "yyyy-MM-dd HH:mm:ss", "yyyy-MM-dd HH:mm", "yyyy-MM", 
            "yyyy/MM/dd", "yyyy/MM/dd HH:mm:ss", "yyyy/MM/dd HH:mm", "yyyy/MM",
            "yyyy.MM.dd", "yyyy.MM.dd HH:mm:ss", "yyyy.MM.dd HH:mm", "yyyy.MM"};

    /**
     * 获取当前Date型日期
     * 
     * @return Date() 当前日期
     */
    public static Date getNowDate()
    {
        return new Date();
    }

    /**
     * 获取当前日期, 默认格式为yyyy-MM-dd
     * 
     * @return String
     */
    public static String getDate()
    {
        return dateTimeNow(YYYY_MM_DD);
    }

    public static final String getTime()
    {
        return dateTimeNow(YYYY_MM_DD_HH_MM_SS);
    }

    public static final String dateTimeNow()
    {
        return dateTimeNow(YYYYMMDDHHMMSS);
    }

    public static final String dateTimeNow(final String format)
    {
        return parseDateToStr(format, new Date());
    }

    public static final String dateTime(final Date date)
    {
        return parseDateToStr(YYYY_MM_DD, date);
    }

    public static final String parseDateToStr(final String format, final Date date)
    {
        return new SimpleDateFormat(format).format(date);
    }

    public static final Date dateTime(final String format, final String ts)
    {
        try
        {
            return new SimpleDateFormat(format).parse(ts);
        }
        catch (ParseException e)
        {
            throw new RuntimeException(e);
        }
    }

    /**
     * 日期路径 即年/月/日 如2018/08/08
     */
    public static final String datePath()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyy/MM/dd");
    }

    /**
     * 日期路径 即年/月/日 如20180808
     */
    public static final String dateTime()
    {
        Date now = new Date();
        return DateFormatUtils.format(now, "yyyyMMdd");
    }

    /**
     * 日期型字符串转化为日期 格式
     */
    public static Date parseDate(Object str)
    {
        if (str == null)
        {
            return null;
        }
        try
        {
            return parseDate(str.toString(), parsePatterns);
        }
        catch (ParseException e)
        {
            return null;
        }
    }
    
    /**
     * 获取服务器启动时间
     */
    public static Date getServerStartDate()
    {
        long time = ManagementFactory.getRuntimeMXBean().getStartTime();
        return new Date(time);
    }

    /**
     * 计算两个时间差
     */
    public static String getDatePoor(Date endDate, Date nowDate)
    {
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        long nm = 1000 * 60;
        // long ns = 1000;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        // 计算差多少小时
        long hour = diff % nd / nh;
        // 计算差多少分钟
        long min = diff % nd % nh / nm;
        // 计算差多少秒//输出结果
        // long sec = diff % nd % nh % nm / ns;
        return day + "天" + hour + "小时" + min + "分钟";
    }

    /**
     * 计算两个时间间隔小时
     * @param endDate
     * @param nowDate
     * @return
     */
    public static Long getDifferenceHour(Date endDate, Date nowDate){
        long nd = 1000 * 24 * 60 * 60;
        long nh = 1000 * 60 * 60;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少小时
        long hour = diff % nd / nh;
        return hour;
    }

    /**
     * 计算两个时间间隔天数
     * @param endDate
     * @param nowDate
     * @return
     */
    public static Long getDifferenceDay(Date endDate, Date nowDate){
        long nd = 1000 * 24 * 60 * 60;
        // 获得两个时间的毫秒时间差异
        long diff = endDate.getTime() - nowDate.getTime();
        // 计算差多少天
        long day = diff / nd;
        return day;
    }

    /**
     * @Description 过去6个月 (半年)
     * @Throws
     * @Return java.lang.String
     * @Date 2021-02-02 10:47:22
     * @Author WangKun
     **/
    public static  Date pastHalfYear(){
        SimpleDateFormat sd = new SimpleDateFormat(YYYY_MM_DD_HH_MM_SS);
        Calendar c = Calendar.getInstance();
        c.setTime(new Date());
        c.add(Calendar.MONTH, -6);
        return parseDate(sd.format(c.getTime()));
    }

    /**
     * 当前时间后 x 分钟的时间
     * @param minute
     * @return
     */
    public static Date afterTime(Integer minute) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date now = new Date();
        System.out.println("当前时间：" + sdf.format(now));

        Calendar nowTime = Calendar.getInstance();
        nowTime.add(Calendar.MINUTE, minute);
        System.out.println("修改后的时间："+sdf.format(nowTime.getTime()));
        return parseDate(sdf.format(nowTime.getTime()));
    }

    /**
     * 判断两个时间是同一天
     * @param startTime
     * @param endTime
     * @return
     */
    public static boolean isSameDay(Date startTime,Date endTime){
        Calendar c1 = Calendar.getInstance();
        c1.setTime(startTime);
        Calendar c2 = Calendar.getInstance();
        c2.setTime(endTime);
        boolean isSameDay = false;
        if(c1.get(Calendar.DAY_OF_MONTH) == c2.get(Calendar.DAY_OF_MONTH)){
            isSameDay = true;
        }
        return isSameDay;
    }

    /**
     * 两个时间是同一天
     * @param startTime
     * @return
     */
    public static boolean isSameSystemDay(Date startTime){
        boolean isSameSystemDay =  false;
        Calendar c1 = Calendar.getInstance();
        c1.setTime(DateUtils.getNowDate());
        Calendar c2 = Calendar.getInstance();
        c2.setTime(startTime);
        if (c1.get(Calendar.DAY_OF_MONTH) == c2.get(Calendar.DAY_OF_MONTH)){
            isSameSystemDay = true;
        }
        return isSameSystemDay;
    }
}
